Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

[hdctss]

I have around 6K miles on my '07 CVO Ultra.  So far have had 2 head gasket failures.  Lately when riding, warmed up around 2-2.5 K rpm I have around 21 lbs oil pressure...I seem to remember around 32 lbs at this rpm warmed up a while back...you guys got any info or input?

[Hoist!]

I have around 6K miles on my '07 CVO Ultra.  So far have had 2 head gasket failures.  Lately when riding, warmed up around 2-2.5 K rpm I have around 21 lbs oil pressure...I seem to remember around 32 lbs at this rpm warmed up a while back...you guys got any info or input?

I'm running at 40 PSI when warmed up and 15 PSI when warmed up at idle. I'm using a Feuling OP. And OT has never been higher than 217 deg at 81 deg ambient in heavy traffic.

Hoist!

[custardglide]

I know you probably want figures for 110 motors but heres my 2 cents worth, with the 103 motor @ 180 deg oil TEMP it runs 34 lbs @ 2500 rpm, on idle it drops to 16 lbs, all with stock pump an internals etc with 17k on clock. My mate, again with 103 was running 17 psi @2500 and 1-2 lbs on tickover. (he has'nt got it now, he's got a 110 )

[Texas 103]

I know you probably want figures for 110 motors but heres my 2 cents worth, with the 103 motor @ 180 deg oil TEMP it runs 34 lbs @ 2500 rpm, on idle it drops to 16 lbs, all with stock pump an internals etc with 17k on clock. My mate, again with 103 was running 17 psi @2500 and 1-2 lbs on tickover. (he has'nt got it now, he's got a 110 )

'06 Haze 103, 23K miles, all stock HD internals except Baisley Spring, Amsoil  180- 200 Temp , 45 LB @ 3000, 15 @ Idle, 2000 SERG, 50 LB @ 3000 18 at Idle Amsoil . First thing I do when I gat a Twin Cam is replace the stock with a Baisley.. best 12.00 I've ever spent....Greg

[sadunbar]

When my motor was stock, when fully warmed up, it ran from about 2000 rpm and up at 32 psi.  Now, with the Feuling Race pump, running at 2000 rpm and up it runs at 45 psi.

[AXIL]

what type of oil are you using?

[grc]

I have around 6K miles on my '07 CVO Ultra.  So far have had 2 head gasket failures.  Lately when riding, warmed up around 2-2.5 K rpm I have around 21 lbs oil pressure...I seem to remember around 32 lbs at this rpm warmed up a while back...you guys got any info or input?

I haven't seen specs for the '07 and later setup (higher output pump and hydraulic tensioner system), but the earlier Twin Cams were supposed to run approximately 30 psi @ 2500 rpm and 230° oil temp.  Normal idle was supposed to be 8-10 psi at the same oil temp.  The info should be listed in the '07 / '08 shop manuals for the latest versions.

Regardless of the specs, the situation you describe is an indication of something that has changed, and it should be investigated.  None of these gauges is extremely accurate, so I wouldn't hang my hat on a number, but if the gauge starts reading significantly differently than it did previously, something is causing that.  May be the wrong oil, may be a bad pressure sending unit, could be a bad gauge, could be a stuck open bypass valve, could be a worn oil pump, etc.  First check is to replace the sending unit with a real mechanics pressure gauge to determine actual pressure.  If actual pressure is OK, test the sending unit and gauge.  If the actual pressure is low, internal inspection will be the next step.

Jerry

[Hoist!]

what type of oil are you using?

We're both using Mobil 1 V-Twin, 20-50 AXIL.

Hoist!

[Capo]

'06 Haze 103, 23K miles, all stock HD internals except Baisley Spring, Amsoil  180- 200 Temp , 45 LB @ 3000, 15 @ Idle, 2000 SERG, 50 LB @ 3000 18 at Idle Amsoil . First thing I do when I gat a Twin Cam is replace the stock with a Baisley.. best 12.00 I've ever spent....Greg

Texas what's a Baisley?

[grc]

Texas what's a Baisley?

Capo,

That refers to a shim for the oil pressure bypass valve spring, or a stronger spring.  The higher the spring tension, the higher the oil pressure (up to the design limitations of the pump). 

One word of caution for the "if a little is good, more has to be better" crowd, excessively high oil pressure is not necessarily a good thing. 

Jerry

[bisounours]

Notice of Baysley spring.....

[megavolt17]

Locked in at 32 always except when it is at idle and warmed up, then it is around 15-20.

[miker]

I have no idea...

[Hoist!]

I have no idea...

Prolly better off. If your oil lite is off, you must be OK then!

Hoist!

[miker]

That how I figger it.